Not gonna explain what that is, but Message boards / Forums will eventually evolve into something more powerful to use with better features. I think the following would be cool to see:

Avatar could remain static image or a small live video feed of your ugly face

Ms paint or basic level photoshop tools in the reply box so you can deface, high light or add text to pics on the fly

Record button for audio in 30-60 second intervals. Imagine what that could do for the audio booth.

Social network side bar - The ability to be in mid debate on a topic and be able to notify outside sources you personally know and invite them instantly into the thread.

Virtual nudes trapper keeper

Real time "contradiction stats"

Community table. A canvas type area where you can drag and drop certain multimedia files onto it which are represented by a certain icon. Anyone can drag items around. There could be a shelf life for the files with an expiration download date set by user/mod.